Apparatus for the manufacture of pipe.



No. 825,421. PATBNTBD JULY 10, 1906. A, M. SAUKDBRS. APPARATUS FOR THEMANUFACTURE OF PIPE APPLIGRTIOR FILED JAE 23, 1904.

2 SHEET$SKEBT i P Q ll- WITNES ES. INVENTOR: 2% 1112/ 1 #2:, LabiaPATENTED HILY 1D, 1906.

A. M. SAUNDERS. APPARATUS FOR THE MANUFACTURE OF PIPE.

LPPLIGLTIOB E'ILED EAR 2B, 1904.

2 SHEETS-SHEET 2 FIG. 2

INVENTOR.

14:3: Mum -v a E s s E N W w UNITED "STATES".

PATENT OFFICE.

AUGUSTUS M. SAUNDERS, -OF MGKEESFGRT, PENNSYLVANIA, ASSIGNOR TO NATIONALTUBE 00., OF PYITSBURG, PENNSYLVANIA, A CORPO- RATION OF NEW JERSEY.

APPARATUS FOR THE MANUFACTURE OF PIPE- Patented July 10, 1906.

To all whom it concern: 7

Be it known that I, Aooos'ros M. SAUN- DEBS, aresident of MoKeesport, inthe county of Aiiegheny and State of Pennsylvania, have invented a newand useful Improvement in .etlpfaratus for the Manufacture of Pipe; ando hereby declare the followin to be a fuil, clear, and exact descrrp!tiont ereof.

My invention relates to the manufacture of welded tubing, and hasspecial reference to the manufacture of what is known as doubiedengthtubing, where the tube is welded of double the ordinary standard lengthand is severed during finishing into 7 two tubes of ordinary standardlength. Its

object is to rovide for the quick handling of the welds tubes.

In letters Patent of the United States No. 715,854 to Peter Patterson,dated Decamber 36, 1902, is described ayparatus for the manufacture ofsuch tubing, in which the welded double-Ion th tube is assed into efeeding-trough an fed to the ishin 403s and is either severed into twosections fore" assing through the first or sizing rolls oi thefinishing-rolls, cry-if cross-rolis are em ioyed, before passing throughsuch cross-re V In the manufacture of certain sizesof this eiass of'tubing se ne difliculty has been experienoed frrnthe deiay consequentto the stag pinguof the long tube for sewing and the su ent feeding ofthe two sections forms from the single tube successively along the samecourse and through the. fimshing-roils.

- By the present inirentiondiflieulties of this character are overcomeand means provided to:- the quick finishing of the two sections'soformed.

' To these ends it consists, generally stated, in the combination withthe wel furnace and welding apparatus in front of e same, of a receivingtrough or holder at the aided the. welding apparatus, a saw adapted topass across the trough, two sets of finishingrolis at the side of t ereceiwingtrou h and feeding-troughs for the some, and atom! transfermechanism to transfer the tube-sections from the respectivereceivingtrough sections to the feeding-troughs of the respectivefinishing-milk It -also consists in certain other improvements, ashereinafter more fuliy set iorth and claimed To enable others skilled inthe art to prac- (ice in invention, I will describe the same more uliy,referring to the accompanying drawings, in which- Figure 1 is ejilanview of apparatus embodying the some. Fig. 2 is an enlargedcross-section on the line 2 2, Fig. 1. Fi 3 is a like view on the line 33, Fig. 1; and ig. 4 is a nice section illustrating another embodimentof transfer mechanism shown in Fig. 3.

In the accompanying drawings the welding-furnaee 2 is'of any suitableconstruction, being fprefertdfl'v of the regenerative type, being ormedof sufficient length to heat the tubes of double length, the furnacebeing .eneraliy about forty (40) to forty-five (45) eet long. In frontof the same is the weldapparatus 3, which may be of any suiteb econstruction. V .1 As illustrated in the drawings, the ap aratus isarraned for welding butt -weid tailing, s'xzd thewwe ding apparatus shown isin the form of e swingmg drew-bench, which is piv- 1 steel at its rearend 4 and has a continuouslyzunning draw-chain 5 and a hell-holder 6 atits forward end, the tubin be'- welded by means-of tongs 7, bywhic theiainkis eni own over the ten and the tongs connected to the drew-c sinto draw the tube (1 through the hell, which is caught in the hellholder.At the side of this draw-henchis any suitable hoider, such as thereceiving trough 8, which isforrned'in two sections 9 and I0,andfsnensted at the side of this reeitiiigtmugh and adapted to passacross the same is the saw 1 This sawis illustrated as supported inthesaw-frame 12, mounted in the hearing 13 eontroiied in itsoperationshy means of the hydriulic rams 1'4 and 15, the r-am 14 beinconnected to an extension 16 of the sawwoe, while the ram 15 connectswith the some between its pivotal 'Fiinft and the saw. The two ramsprovide or iuii control of the saw; The saw is illus- -trated as drivenby means of a motor 17 thro h belt or like connections 18. At the side 0the reoeiving trough 3 1 two sets of finis -rolls each set bcmg'-refer-ab! formed 0 siain g-rolls and crossalls with glalged in thefurnace, a welding-bell being their accompanying troughs. For exam 1e,there are the sizing-rolls 19 with their fee ing trough 20, thecross-roll trough 21, cross-rolls 22, final receiving-trough 2.3 and atthe side of the same the cooling rack or table 24.

There are also the sizing-rolls 25 with the sizing-roll trough 26,cross-roll trough 27, crossrolls 28, final receiving-trough 29, andcooling rack or table 30.

Suitable transfer mechanism is provided between the res ectivetrough-sections of the receiving-trough and the respective sizingrolltroughs, so as to provide for transfer: of the tube-sections into theproper troughs for finishing. The transfer from the trough-section 10 tothe sizing-roll troughs 20 is a simple transfer which may beaccomplished by means of the levers 31, pivoted between the troughs, asat 32, and operated by means of the connecting-bars 33 and hand-lever34, as shown in Fig. 2. The transfer-levers 31 have forked upper ends,as shown at 35, and fit suitable seats in the receiving-trough sections10, so that after the sawing of the welded tube the tube-section may bequickly lifted out of the trough-section 10 and delivered into the trouh-section 20, which trough-section is provi ed with the ower-drivenrolls feeding into the sizing-ro ls, the tube then passing in regularcourse. As the saw cuts the welded tube into sections, part of thesection resting in the trough 10 is under the saw-frame 12. Thetube-section must therefore be first carried longitudinally away fromthe saw-frame, and for that purpose this receiving-trough has drivenrollers 37, so rotated as to carry the tube away from the saw, whilebeyond and in line with the trough-section is the abutment 38, thedriven rollers 37 as soon as the tube is severed carrying the blank awayfrom the saw until it contacts with the said abutment, being thuscarried far enough to clear the body of the saw-frame. To provide forthe transfer of the tube-section in the receiving-trough section 9 tothe sizing-roll trough 26, it is necessar to overcome another mechanicaldiflicu ty. The blank must be transferred over the cross-roll trou h 21of the inner set of finishing-rolls, and or that purpose prefer toemploy the lateral transfer mechanism illustrated in Fi 3. This consistsof levers 39, having depending arms pivoted at 40 to bearings close tothe said crossroll trou h21, and having arms 41 extending into seats 111the receiving-trough 9 in position to lift the tube-section therefrom,and having lon delivery arms 42 extending in the opposite direction fromthe body of the lever above the cross-roll trough 21. and of sufficientlength to carry the blank over into. position to be delivered into thesizing-roll trough 26. To operate these lateral transfer-levers 39, Iprefer to employ a ram 43, though they may be 0 erated by hand-leverconnections, if desired In Fig.

4 is shown another form of this same transfer mechanism, which is thesame in general construction except that where the troughs are placedcloser it is not necessary to employ so long a lifting-arm 41 or so longa deivery-arm 42, as'shown in Fig. 3.

In the practice of the invention in the manufacture of double-lengthtubing and with the apparatus illustrated the tubeblanks may either bein plate or strip form or may be previously bent into U-sha e or tubular'form, and in making butt-Wel tubing they are preferably fed through therear end of the welding-furnace into final heating position, and whentheir edges are at a Welding heat they are asped by the weldingtongs, aWelding-bel passed over the same, the ton s connected to the draw-chain,the blank rawn through the weldin -bell and welded into tubing. ThedoubTe length Welded tube then passes into the receiving trough 8 and assoon as it enters the same by means of the saw 11 it is cut into twosections, when each section isimmediately transferred from suchreceiving-trough into the proper sizing-trough and then passed throughthe finishin -rolls, the receiving-trough being thus quick emptied by alateral transfer therefrom, so that there is practically no delay inemptyin leaving it ready or the reception of t e next tube to'be sawedand each section formed from the long welded tube passes independentlyin its course for finishing. For example, as soon as the long tube issawed into sections the tube-section in the trough 10 is carried by thedriven rolls 37 in said trough until brought against the abutment 38,and thus cleared from the body of the saw-frame, and it is then liftedby the levers 31 and passed by a side transfer into the sizin trough 20,from which it passes through t e rolls 19 into the cross-roll trough 21and into the cross-rolls 22 to the final receiving-trough 23 and ontothe cooling-table 24 by the lat eral transfer-levers 39 and quicklyrolls over the top surface of that lever and over the delivery-arms 42of the same (above the cross-* roll trou h 21 of the otherfinishing-rolls) until it is elivered into the trough-section '26, whenit asses in regular course through the sizing-r0 ls 25 and cross-rolls28 to thecoolingtable. The apparatus therefore provides for the sawin ofthe long welded tube into lengths and ifiieir immediate delivery by aside movement or lateraltransfer from the receiving-tron h when theypass in re lar course for finisiingt Practically all lia ihty of delayon account ofthe finishing of the long welded tubes is thus avoided. Afurther advantage of the apparatus 18 that in case either setoffinishing apparatus becomes disabled the long tube may be severed intosections and one tube-section then finished in the apparatus in workingorder, when the the receiving-tron h and 5 ferred laterally to andfinished in the finisls K other tnbe-section can be carried by thedriven rollers longitudinall to the other section of the receiving-tronand then transin a aratus in working order.

iviiii I claim is 1. In apparatus for the manufacture of double-lengthtubing, the combination of a receiving trough or holder, two sets offinishing-rolls at the side of the holder, each set having afeeding-trough in front of the same, a saw adapted to cut the double-ionth tube into sections when supported in sai holder, and lateral transfermeans for carrying the tube-sections from the holder to thefeedingtroughs.

2. In apparatus for the manufacture of double-length tubin thecombination of a weldin -furnace, weIdin apparatus in front thereo twosets of finishing-rolls at the side of the weldin apparatus, each sethavin a feeding-trons; in front of the same, a holder between thewelding a paratus and troughs, a saw adapted to cut t e double-len thtube into sections when supported in said holder, and lateral transfermeans for carrying the tube-sections from the holder to thefeedingtroughs.

3. In apparatus for the manufacture of double-length tubin thecombination of a weldin -furnace, WeIling apparatus in front thereo areceiving trough or holder at the side of the weldin apparatus, a sawadapted to sever the doub e-len th tube into sections when supported insaid older, and two sets of finishing-rolls atthe side of the holderdriven in opposite directions and adapted toreceive the respectivetubesections and finish the same.

4. In apparatus for the manufacture of double-length tubin thecombination of a weldin -furnace, wel ding apparatus in front thereo areceiving trough or holder at the side of the weldin a paratus, a sawadapted to sever the dosh eength tube into sections finishing-rolls atthe s1 .one section of said troug when supported in said holder, twosets of finishing-rolls at the side of the holder driven in oppositedirections adapted to receive the res eetive tube-sections and finishthe same, an lateral transfer means ada ted to carry the twotube-sections from t e receivingtrou h into the respectivefeeding-troughs of the ishingrolls 5. In apparatus for the manufactureof double-length tubin the combination of a weldin -furnace, wefiiingapparatus in front thereo a receiving trough or holder'at the side ofthe welding ap aratus; two sets of d of the holder, each havingsizing-rolls and feeding and delivery troughs therefor, the feedin anddelivery trou he of one set respective y overlapping the delivery andfeeding troughs of the other set, a saw adapted to sever thedouble-length tube into sections when supported in said holder, andlateral transfer means adapted to carrg one section of the tube from theholder to t e feeding-trough of one set of rolls and other, lateraltransfer means adapted to carry the other tube-section from the holderpast the delivery-trough of the first set of rolls and into thefeeding-trough of the other set of finishing-rolls.

6. In apparatus for the manufacture of double-length tubin thecombination of a receiving trough or older having an abutment at one endthereof, a saw adapted to pass across the said trou h, driven rollers inads ted to carry the tube longitudinally away cm the saw and againstsaid abutment, and lateral transfer means to carry the blank from saidtrough-section.

In testimony whereof I, the said Anocsrcs M. Ssonnsas, have hereunto setmy hand;

AUGUSTUS M. SAUNDERS.

Witnesses:

JAMES I. KAY, ROBERT C. Torres.

